Current strength distributed a meagre power (8)
I believe the answer is:
amperage
'current strength' is the definition.
(I've seen this before)
'distributed a meagre power' is the wordplay.
'distributed' is an anagram indicator.
'power' becomes 'p' (symbol in physics).
'a'+'meagre'+'p'='ameagrep'
'ameagrep' with letters rearranged gives 'AMPERAGE'.
(Other definitions for amperage that I've seen before include "Strength of current" , "current measure" .)